April 25, 2014
Franz Ries, not Ferdinand Ries, wrote the Perpetuum Mobile performed by violinists like Kubelik. It is his op34 no.5. (Op.34 is Ries' suite no.3 for violin- see http://imslp.org/wiki/Suite_No.3_for_Violin,_Op.34_(Ries,_Franz) - so the perpetuum mobile is the 5th piece, the finale, of this suite, published by Schirmer in 1898.)
(Hrm. Kubelik died in 1940, and this performance seems to be an acoustic from the 1910s - this actually seems to be public domain - a rare and welcome exception for this site... cheers.)
(Not true actually, since that "before 1923" rule-of-thumb doesn't apply to recordings, just for books and scores and somewhat similar things (where material published in the USA with a definite copyright notice of 1922 or before, or no definite copyright notice (but published before the 1980s I think) and not renewed/no "NIE" filing- the rules are a little complicated- are now public domain); _all_ recordings are in copyright except as specifically licensed for others' use, until 2040 or so at least I think, so far as USA copyright law is concerned.